To be useful in science a hypothesis must be

Draw an mrna strand that is complementary to the dna strand aattgc. circle a nucleotide

Sickle cell disease is passed on from parent to offspring. Sickle cell disease is an A. Inherited. B. Acquired disease. Some carriers of the disease exhibit resistance to malarial parasites. The resistance is a A. Neutral B. Harmful C.

Compare endocrine glands and exocrine glands

Which is the best example of a hypothesis? When temperature increases, ice melts faster. If temperature is increased, then ice will melt more quickly. When ice melts quickly, it is because temperature was increased.

Classify these four newly discovered organisms by selecting the domain to which they belong. A marine biologist took a sample from a hot spring. The cell has no nucleus and looks different from bacteria found in water.

Which of the following is a social consequence of global fuel dependence? a. rising costs of oil b. increase in atmospheric pollution levels c. poverty causing lack of access to fossil fuel resources d. an increase in the production of fossil fuels

The following flow of energy takes place in one ecosystem: alga → insect → larva flatworm → fish. Which trophic level has the most energy to pass on to the next? flatworm alga fish insect larva

Consider an experiment in which an Hfr strain of E. coli bacteria with the StrS, his+, met + alleles in its genome is mixed with an F - strain of E. coli with the StrR, his-, and met - alleles in its genome.

All fingerprints are invisble to the naked eye

These are organism that come from the same cell and are genetically identical to one another